ArticleZoological letters2021
The balance of crystalline and amorphous regions in the fibroin structure underpins the tensile strength of bagworm silk.
Article in Zoological letters, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed.
- Morphological and compositional basis of silk fiber function inJournal of materials chemistry. B · 2026Article
- Spider silk-based structural proteins as tough, biodegradable, and sustainable polymers.Proceedings of the Japan Academy. Series B, Physical and biological sciences · 2026Review
- Article
- Regionalization of gene expression and cell types in the silk gland of the pantry mothbioRxiv : the preprint server for biology · 2025Article
- Native Silk Fibers: Protein Sequence and Structure Influences on Thermal and Mechanical Properties.Biomacromolecules · 2025Review
- Individual evaluation of attachment strength at each adhered point in the silk foothold constructed by bagworms for walking and dangling.Scientific reports · 2025Article
- Total Synthesis of the Sex Pheromone ofInternational journal of molecular sciences · 2024Article
- Article
- The complete mitochondrial genome ofMitochondrial DNA. Part B, Resources · 2024Article
- Influence of experimental methods on the mechanical properties of silk fibers: A systematic literature review and future road map.Biophysics reviews · 2023Review
- Molecular mechanisms of the high performance of spider silks revealed through multi-omics analysis.Biophysics and physicobiology · 2023Article
- 1000 spider silkomes: Linking sequences to silk physical properties.Science advances · 2022Article
- Artificial and natural silk materials have high mechanical property variability regardless of sample size.Scientific reports · 2022Article
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5 authors.
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Abstract
Protein-based materials are considered versatile biomaterials, and their biodegradability is an advantage for sustainable development. Bagworm produces strong silk for use in unique situations throughout its life stages. Rigorous molecular analyses of Eumeta variegata suggested that the particular mechanical properties of its silk are due to the coexistence of poly-A and GA motifs. However, little molecular information on closely related species is available, and it is not understood how these properties were acquired evolutionarily or whether the motif combination is a conserved trait in other bagworms. Here, we performed a transcriptome analysis of two other bagworm species (Canephora pungelerii and Bambalina sp.) belonging to the family Psychidae to elucidate the relationship between the fibroin gene and silk properties. The obtained transcriptome assemblies and tensile tests indicated that the motif combination and silk properties were conserved among the bagworms. Furthermore, our analysis showed that C. pungelerii produces extraordinarily strong silk (breaking strength of 1.4 GPa) and indicated that the cause may be the C. pungelerii -specific balance of crystalline/amorphous regions in the H-fibroin repetitive domain. This particular H-fibroin architecture may have been evolutionarily acquired to produce strong thread to maintain bag stability during the relatively long development period of Canephora species relative to other bagworms.
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